As far as I know, these guys are still out: Darmian, Jones, Varela, Rojo, Januzaj, Young, Schweinsteiger, Valencia, and Shaw. It's hard to see if we could
really rest anyone in preparation for Arsenal but...
de Gea
Love McNair Blind Borthwick-Jackson
Schneiderlin Herrera
Pereira Fellaini Memphis
Keane
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Romero; Smalling; Carrick, Lingard, Mata; Rooney, Martial
That's probably the only way to rest Smalling, Carrick, Mata, Rooney, Martial (and I suppose Lingard) for the Arsenal game. The side might look a little weak, even for such an opponent. However, we'd still have a return leg to fix this if we were to lose and I'm sure we can at least score an away goal over there even if we have one of our worst performances.
Edit: Just realised it's FA Cup weekend already, we play Arsenal the weekend after.